The Bearing,roller,cylindrical, cataloged under National Stock Number 3110-00-185-4087, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Rolls-Royce Corporation. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-00-185-4087 |
| Primary Part Number | 6871645 |
| Item Name | Bearing,roller,cylindrical |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Rolls-Royce Corporation |
| Status | ACTIVE |
| Retainer Fabrication Method | MACHINED |
| Internal Clearance | 0.0022 INCHES MINIMUM RADIAL AND 0.0032 INCHES MAXIMUM RADIAL IN |
| Locating Feature | ONE DIRECTION |
| Surface Finish | GROUND |
| Style Designator | SINGLE ROW, ONE-DIRECTION LOCATING, ONE LIP INNER RING, TWO LIP OUTER RING, SEPARABLE |
| Overall Outside Diameter | 3.9340 INCHES NOMINAL IN |
| Bore Shape | STRAIGHT |
| Standard Tolerance Designation | RBEC NO.5 |
| Bore Diameter | 2.1652 INCHES NOMINAL IN |
| Material | COPPER ALLOY RETAINER |
| Material | STEEL COMP 8620 INNER RING |
| Material | STEEL COMP 8620 ROLLER |
| Material | STEEL COMP 8620 OUTER RING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 6871645 | Rolls-Royce Corporation (USA) |
| Reference | Meaning |
|---|---|
| R0211WBP54 | 3/9 Design control — primary reference General Motors Corp Delco Moraine Ndh Div |
| 6871645 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
NSN 3110-00-185-4087 is a Bearing,roller,cylindrical, manufactured by Rolls-Royce Corporation, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-185-4087 has 1 manufacturer part number on file: 6871645 (Rolls-Royce Corporation).
Key specifications for 6871645: Retainer Fabrication Method: MACHINED; Internal Clearance: 0.0022 INCHES MINIMUM RADIAL AND 0.0032 INCHES MAXIMUM RADIAL IN; Locating Feature: ONE DIRECTION; Surface Finish: GROUND. 13 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.